[mythtv-users] Stutters with 1080i at 25fps H264 AC3 2 channel audio on a 50Hz display live playback.

[John Pilkington]

On 09/12/16 22:29, Stephen Hocking wrote:
> Hi all,
>
> One of our TV channels in Australia, ABC20, was recently created as per
> the standard in the subject. It seems prone to stuttering on live
> playback. The system has a Nvidia 610 card (the only passively cooled
> thing I could find at the time) using vdpau vdpau, for playback and a
> quad core Skylake i5. I see messages like
>
> Dec 10 09:01:51 bong mythfrontend.real: mythfrontend[6007]: N
> CoreContext mythplayer.cpp:2176 (PrebufferEnoughFrames) Player(2):
> Waited 1870ms for video buffers AAAAAAAAAAAdLLLL
> Dec 10 09:01:51 bong mythfrontend.real: mythfrontend[6007]: N
> CoreContext mythplayer.cpp:2176 (PrebufferEnoughFrames) Player(2):
> Waited 1973ms for video buffers AAAALAALLAAdAAAA
> Dec 10 09:01:54 bong mythfrontend.real: mythfrontend[6007]: N
> CoreContext mythplayer.cpp:2176 (PrebufferEnoughFrames) Player(2):
> Waited 102ms for video buffers ALLAAAAAdAAADALd
>
>
> When I'm playing back a recording it's fine. When I'm playing back
> something that's in the process of being recorded, it's fine, which
> seems to rule out bandwidth to/from the recording disk (which is NFS
> mounted) as an issue.
>

I believe the usual advice is to pause live tv for a few seconds and 
resume.  Don't know about the time-stretch, though.

John P